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