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