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)(11,14)(12,15)(13,16)(17,18,20,22)(19,21,24,23)(25,26,29,31)(27,32,30,28)(1,3,6,8)(2,7,4,5)(10,11)(15,16)(25,26,29,31)(27,28,30,32)(2,4)(3,8)(9,11,14,10)(12,15,13,16)(17,18)(19,23)(20,22)(21,24)(25,27)(26,28)(29,30)(31,32)(1,4,6,2)(3,5,8,7)(9,12,14,13)(10,15,11,16)(17,19)(18,21)(20,24)(22,23)(25,28)(26,30)(27,31)(29,32)(1,5)(2,3)(4,8)(6,7)(9,13,14,12)(10,16,11,15)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.