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