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