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