One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(5,6)(7,14)(8,12)(9,18)(10,13)(11,16)(15,20)(17,19)(21,22,26,31,27,23,32,33,25,30,34,36,24,29,28,35)(5,7)(6,11)(8,17)(9,15)(10,16)(12,20)(13,14)(18,19)(21,23,26,33,27,30,32,36,25,29,34,35,24,22,28,31)(1,2,3,4)(5,8,10,9)(6,12,13,18)(7,15,16,17)(11,19,14,20)(21,24,25,27)(22,29,30,23)(26,28,34,32)(31,35,36,33)(5,9,10,8)(6,12,13,18)(7,15,16,17)(11,20,14,19)(21,24,25,27)(22,29,30,23)(26,28,34,32)(31,35,36,33)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.