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