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