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