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)(21,22,25,29)(23,31,33,27)(24,30,26,28)(32,36,34,35)(1,2,4,3)(5,7)(6,8)(9,16)(10,17)(11,19)(12,15)(13,18)(14,20)(21,23)(22,27)(24,32)(25,33)(26,34)(28,36)(29,31)(30,35)(5,8,9,15)(6,11,12,17)(7,13,16,14)(10,20,19,18)(22,28)(24,26)(27,35)(29,30)(31,36)(32,34)(1,3,4,2)(6,12)(8,15)(13,14)(18,20)(21,24,25,26)(22,28,29,30)(23,32,33,34)(27,36,31,35)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.