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