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