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