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