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