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