From my earlier posting.
You can also take Pattaya Van at BTS Victory Monument, just below the station. I find it cheaper at 97 bahts and convenience to travel from Bangkok to Pattaya and back if I'm not going direct from airport by Bell Travel (door to door service).
Just click Routes & Schedules to view the map.
http://www.pattayavan.com/2010/index_en.html