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