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