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