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