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