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