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