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