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