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