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