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