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