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