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)(17,18,24,25,23,27,22,26)(19,28,21,20,30,31,29,32)(9,10)(11,15)(12,14)(13,16)(17,19,23,30)(18,20,27,32)(21,24,29,22)(25,28,26,31)(1,3,5,4)(2,6,7,8)(9,11,12,16)(10,13,14,15)(17,20)(18,19)(21,25)(22,28)(23,32)(24,31)(26,29)(27,30)(11,16)(13,15)(17,21,22,19,23,29,24,30)(18,20,26,28,27,32,25,31)(1,4,5,3)(2,6,7,8)(10,14)(13,15)(17,22,23,24)(18,25,27,26)(19,29,30,21)(20,31,32,28)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.