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