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