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