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