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