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