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