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