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