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