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