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