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)(17,18,21,24)(19,25,27,22)(20,23,29,28)(26,31,32,30)(1,3)(2,5)(4,8)(6,7)(9,10)(11,15)(12,16)(13,14)(17,19)(18,22)(20,26)(21,27)(23,30)(24,25)(28,31)(29,32) involution — undirected(1,2,4,6)(3,5,8,7)(9,11,13,12)(10,15,14,16)(17,19,21,27)(18,22,24,25)(20,26,29,32)(23,30,28,31)(1,2)(3,5)(4,6)(7,8)(9,11,13,12)(10,15,14,16)(17,19)(18,22)(20,26)(21,27)(23,30)(24,25)(28,31)(29,32)(1,3)(2,5)(4,8)(6,7)(9,12,13,11)(10,16,14,15)(17,18)(19,22)(20,28)(21,24)(23,29)(25,27)(26,31)(30,32)(17,20)(18,23)(19,26)(21,29)(22,30)(24,28)(25,31)(27,32) 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.