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