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