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