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