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