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