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