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