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