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