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