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