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