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