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