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