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