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