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)(22,24)(23,29)(28,32)(31,35) involution — undirected(1,2)(3,4)(5,6,10,11)(7,12,14,18)(8,9,13,17)(15,16,19,20)(21,22,26,24)(23,30,29,27)(25,28,33,32)(31,36,35,34)(5,7)(6,12)(8,15)(9,16)(10,14)(11,18)(13,19)(17,20)(21,23,26,29)(22,27,24,30)(25,31,33,35)(28,34,32,36)(5,8)(6,9)(7,15)(10,13)(11,17)(12,16)(14,19)(18,20)(21,24,26,22)(23,30,29,27)(25,32,33,28)(31,36,35,34)(5,9)(6,13)(7,16)(8,11)(10,17)(12,19)(14,20)(15,18)(21,25,26,33)(22,28,24,32)(23,31,29,35)(27,34,30,36)(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.