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