In America, the war was focused between the 13 American colonies (still owned by the British) and the French in Canada in a dispute over the territory in the Ohio river valley. For your map the French would have Canada and the British the 13 colonies (and Nova Scotia, annexed at the Peace of Utrecht).
Europe is a lot more confusing. Prussia, Britain's ally, was scattered as a number of non-contiguous states throughout the Holy Roman Empire (and also in Danzig and a stretch of territory between the Nieman and Vistula rivers adjacent to the Baltic. Their territory around Berlin did not touch this but it did reach the Baltic by gaining part of Pomerania. One of the most important territories was the recently acquired Silesia, taken from Austria in 1748. Prussia also had East Friesland on the North Sea and Guelders on the Rhine. there are their major territories at the time and I'll try to find a map.
I believe France has all of the territory it has today with the exceptions of Nice and Savoy.
Austria is pretty much a big chunk of southern Europe. They had parts of modern day Croatia, Slovenia, Austria (duh), Hungary, Transylvania (part of Romania), Tyrol (part of Italy) and all of Serbia north of Belgrade.
I have no idea what you should do for the Holy Roman Empire. They have hundreds of states that are pretty much independent of each other. If you lumped them together they would be too powerful so I guess you should divide them into a few major states.
Anyway, I'll try to upload some maps for you to make it easy but I don't think I have one that shows everything.
Edit: Some maps
Here's a
map of Poland
And a
map of America
This
map shows Saxony (on Austria's side) and Hanover (on Prussia's side)