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