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