One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,14)(8,10)(9,11)(12,16)(13,17)(15,20)(18,19)(21,22,25,30,27,32,26,31)(23,28,33,36,34,29,24,35)(1,2)(3,4)(6,10)(7,15)(8,17)(11,13)(12,20)(14,19)(21,23,25,33,27,34,26,24)(22,28,30,36,32,29,31,35)(2,4)(6,11)(10,13)(12,19)(14,20)(21,24,27,33)(22,29,32,28)(23,25,34,26)(30,36,31,35)(5,7,9,15)(6,12,11,19)(8,18,17,16)(10,14,13,20)(21,25,27,26)(22,30,32,31)(23,24,34,33)(28,35,29,36)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.