Other than the IEE or ANSI, I don't know, maybe the Corp of Engineers might have one....
Use a standard recep. symbol - a circle and two lines; two lines extend out on one side of the circle, this creates a three compartment circle, fill in one of the compartments.
Now this is the trickie part you can either have make hash marks representing the the count of CCC on a single line from the switch to the receptical, or just draw a second line from what I'll assume is a second switch in the room.
If it's not on a second switch, I'd consider only using the hash or tick marks made up of two longs and a short, IE thats two hots and a common neutral. The Ground (bond) is not shown, IE and not a CCC but exist through EMT usuage or MC or with-in modern day wiring methods.
Be sure to put it in your legend of symbols and also in the construction notes on the drawing, it's not universal but usually the bottom is switched, making the top part more accessible.
Hope that Helps... Enjoy your weekend.