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