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