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