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