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