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)(17,18,23,21)(19,26,22,24)(20,28,30,25)(27,31,29,32)(1,2)(3,6)(4,7)(5,8)(17,19)(18,24)(20,29)(21,26)(22,23)(25,32)(27,30)(28,31) involution — undirected(9,10,12,14)(11,13,16,15)(19,22)(24,26)(27,29)(31,32)(1,3,5,4)(2,6,8,7)(9,10)(11,13)(12,14)(15,16)(17,20,23,30)(18,25,21,28)(19,27,22,29)(24,31,26,32)(1,3,5,4)(2,6,8,7)(9,11)(10,13)(12,16)(14,15)(17,21,23,18)(19,24,22,26)(20,28,30,25)(27,31,29,32)(1,4,5,3)(2,7,8,6)(17,22,23,19)(18,24,21,26)(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.