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