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