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