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