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