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