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)(11,14)(12,16)(13,15)(17,18,21,22)(19,20,23,24)(25,26)(27,28)(29,32)(30,31)(9,11,13,12)(10,14,15,16)(17,19)(18,20)(21,23)(22,24)(26,31)(28,32)(2,6)(3,8)(10,15)(14,16)(18,22)(19,23)(25,27,30,29)(26,32,31,28)(1,3)(2,7)(4,6)(5,8)(9,10)(11,14)(12,16)(13,15)(17,18)(19,20)(21,22)(23,24)(25,28,30,32)(26,27,31,29)(1,4,5,7)(2,3,6,8)(9,12,13,11)(10,16,15,14)(17,20)(18,19)(21,24)(22,23)(25,29,30,27)(26,32,31,28)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.