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