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