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