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