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