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