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