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