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