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