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