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