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