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