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