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