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