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