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