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