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