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