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