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