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