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