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