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