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)(11,13,15,16)(17,18)(19,23)(20,24)(21,30)(22,25)(26,28)(27,29)(31,32)(2,6)(7,8)(9,11)(10,13)(12,15)(14,16)(17,19,22,29)(18,23,25,27)(20,26,30,32)(21,31,24,28)(1,3,5,4)(2,7,6,8)(17,18,24,30,22,25,21,20)(19,26,31,27,29,32,28,23)(1,3,5,4)(2,7,6,8)(11,15)(13,16)(17,20,24,18,22,30,21,25)(19,27,31,32,29,23,28,26)(1,4,5,3)(2,7,6,8)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.