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