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