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