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