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