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