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