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