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