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