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