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