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