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)(21,22,26,30)(23,27,32,35)(24,29,34,36)(25,28,33,31)(2,3)(5,7)(6,10)(8,15)(9,14)(11,19)(12,18)(13,16)(17,20)(21,23)(22,27)(24,33)(25,34)(26,32)(28,36)(29,31)(30,35) involution — undirected(5,8,9,16)(6,11,12,20)(7,13,14,15)(10,17,18,19)(22,28)(23,32)(25,33)(27,29)(30,31)(35,36)(1,3,4,2)(8,16)(11,20)(13,15)(17,19)(21,24,26,34)(22,29,30,36)(23,33,32,25)(27,31,35,28)(6,12)(7,14)(11,20)(13,15)(22,30)(23,32)(24,34)(28,31) 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.