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