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