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