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