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