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