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