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