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