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