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