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