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