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