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