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