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