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