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