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