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