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