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