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