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