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