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