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