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