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