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