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