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