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