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)(17,18,22,24)(19,25,26,21)(20,23,28,31)(27,32,29,30)(1,3,4,7)(2,5,6,8)(9,11,12,15)(10,13,14,16)(17,18)(19,21)(20,23)(22,24)(25,26)(27,30)(28,31)(29,32)(1,2)(3,5)(4,6)(7,8)(10,14)(11,15)(19,26)(20,28)(21,25)(23,31) involution — undirected(9,11,12,15)(10,13,14,16)(17,19)(18,21)(20,29)(22,26)(23,32)(24,25)(27,28)(30,31)(1,3)(2,5)(4,7)(6,8)(9,11)(10,13)(12,15)(14,16)(17,20)(18,23)(19,27)(21,30)(22,28)(24,31)(25,32)(26,29) involution — undirected(1,2)(3,5)(4,6)(7,8)(9,10)(11,13)(12,14)(15,16)(17,21)(18,19)(20,30)(22,25)(23,27)(24,26)(28,32)(29,31) 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.