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