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