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