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