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