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