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