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