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