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