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