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