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