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