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