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