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)(17,18,22,27)(19,25,28,32)(20,30,29,24)(21,23,31,26)(2,5)(6,8)(9,11,13,12)(10,14,15,16)(18,23,27,26)(19,28)(20,29)(24,25,30,32)(1,3)(2,6)(4,7)(5,8)(10,15)(14,16)(17,19,22,28)(18,24,27,30)(20,31,29,21)(23,25,26,32)(3,7)(6,8)(9,12,13,11)(10,16,15,14)(17,20,21,19,22,29,31,28)(18,25,26,30,27,32,23,24)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.