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