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