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