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