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)(12,14,16,15)(17,18,22,21)(19,23,26,29)(20,24,28,30)(25,31,32,27)(1,3,5,4)(2,6,7,8)(10,13)(12,16)(17,19)(18,23)(20,27)(21,29)(22,26)(24,25)(28,31)(30,32)(1,4,5,3)(2,6,7,8)(10,14)(12,16)(13,15)(17,20)(18,24)(19,25)(21,30)(22,28)(23,31)(26,32)(27,29)(2,7)(6,8)(10,13)(14,15)(17,18,22,21)(19,23,26,29)(20,24,28,30)(25,31,32,27)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.