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