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