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