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