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