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