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