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