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