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