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