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)(21,22,27,36,26,31,25,30)(23,32,35,28,33,29,24,34)(5,6,9,10)(7,11,8,12)(13,15,17,16)(14,18,19,20)(21,23)(22,28)(24,27)(25,35)(26,33)(29,30)(31,34)(32,36)(5,7,9,8)(6,11,10,12)(14,19)(18,20)(21,23,27,35,26,33,25,24)(22,29,36,34,31,32,30,28)(2,4)(5,8,9,7)(6,11,10,12)(13,16,17,15)(14,20,19,18)(21,24,27,23,26,35,25,33)(22,28,36,29,31,34,30,32)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.