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