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