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