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