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