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