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