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