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