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