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)(11,13)(12,14)(15,16)(17,18)(19,20)(21,23)(22,24)(25,26,29,28)(27,31,32,30)(1,3)(2,7)(4,6)(5,8)(9,10,12,14)(11,13,15,16)(17,19,21,24)(18,22,23,20)(25,26,29,28)(27,30,32,31)(2,8)(3,4)(11,15)(13,16)(18,23)(20,22)(25,26,29,28)(27,30,32,31)(1,4,6,3)(2,5,8,7)(9,11,12,15)(10,13,14,16)(17,20,21,22)(18,19,23,24)(25,27,29,32)(26,30,28,31)(1,5)(2,3)(4,8)(6,7)(9,10)(11,13)(12,14)(15,16)(17,19)(18,22)(20,23)(21,24)(25,28,29,26)(27,31,32,30)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.