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