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