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