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