Normally, cable routing is not shown on architectural or engineering drawings unless it is a main pathway (with many cables), it is then shown as a dotted line and listed in the legend as such, "Cable Pathway". There are also drawing standards recommended in the EIA/TIA publication EIA/TIA-606-A, Annex C which goes into this and other recommendation for administrating a telecommunications infrastructure.
Actual station locations are typically
shown with a triangle (communication) symbol and variations would indicate if it is be flush, surface or floor mounted or if it is a voice, data or combination. Again listing the symbol in the legend, with a note on the typical number of cables required per location.
Most designers use the pull schedule to indicate which cables are category 5e, Coax, etc. for larger commercial project in conjunction with the drawing legend.
Joseph Golan, RCDD