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