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