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