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