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