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