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