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