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