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