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