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