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