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