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