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