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