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