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)(19,27,25,31)(20,30,32,29)(22,26,23,28)(1,3,5,4)(2,6,8,7)(9,10)(11,15)(12,13)(14,16)(17,19,23,29,24,25,22,30)(18,20,26,27,21,32,28,31)(1,3,5,4)(2,7,8,6)(10,13)(14,15)(17,20,23,27,24,32,22,31)(18,25,26,30,21,19,28,29)(9,11,12,16)(10,14,13,15)(17,21,24,18)(19,20,25,32)(22,26,23,28)(27,30,31,29)(1,4,5,3)(2,6,8,7)(17,22,24,23)(18,26,21,28)(19,29,25,30)(20,31,32,27)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.