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