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