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