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