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