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