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