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