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