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