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