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