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