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