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