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