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