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