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