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