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)(17,18,20,23)(19,22,26,29)(21,24,28,31)(25,32,27,30)(1,3,5,4)(2,6,8,7)(9,10)(11,14)(12,13)(15,16)(17,19,20,26)(18,22,23,29)(21,25,28,27)(24,32,31,30)(1,3,5,4)(2,7,8,6)(10,13)(14,15)(18,23)(22,29)(24,31)(30,32)(1,3,5,4)(2,7,8,6)(9,11,12,16)(10,14,13,15)(18,23)(19,25)(21,28)(22,30)(26,27)(29,32)(1,4,5,3)(2,7,8,6)(19,26)(22,29)(25,27)(30,32)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.