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