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