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