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