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