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