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