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