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)(11,15)(12,14)(13,16)(17,18,23,21)(19,26,30,25)(20,22,31,24)(27,32,28,29)(2,5)(6,8)(9,11,12,16)(10,13,14,15)(17,19,23,30)(18,25,21,26)(20,27,31,28)(22,29,24,32)(1,3,4,7)(2,6,5,8)(10,14)(11,16)(17,20)(18,22)(19,27)(21,24)(23,31)(25,29)(26,32)(28,30)(10,14)(13,15)(17,21,23,18)(19,28,30,27)(20,22,31,24)(25,32,26,29)(2,5)(6,8)(10,14)(13,15)(17,22,23,24)(18,20,21,31)(19,29,30,32)(25,27,26,28)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.