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