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