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