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