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