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