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