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