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