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