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