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