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