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