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