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