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