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