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