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