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