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