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