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