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