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)(11,13)(12,15)(14,16)(17,18,23,21,22,26,27,32)(19,24,30,25,29,31,20,28)(3,8)(5,7)(9,11,13,10)(12,15,16,14)(17,19)(18,24)(20,27)(21,25)(22,29)(23,30)(26,31)(28,32)(1,3,4,8)(2,5,6,7)(10,11)(14,15)(17,20,22,30)(18,25,26,28)(19,27,29,23)(21,31,32,24)(2,6)(5,7)(10,11)(14,15)(17,21,23,26,22,32,27,18)(19,28,30,24,29,25,20,31)(9,12,13,16)(10,14,11,15)(19,29)(20,30)(24,31)(25,28)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.