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