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