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