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)(17,18)(19,26)(20,31)(21,24)(22,28)(23,27)(25,29)(30,32)(2,5)(6,7)(9,11)(10,14)(12,15)(13,16)(18,24)(19,29)(20,30)(22,23)(25,32)(26,31) involution — undirected(9,12,13,10)(11,15,16,14)(17,19,23,20,21,30,22,29)(18,25,28,32,24,31,27,26)(11,16)(14,15)(17,20,22,19,21,29,23,30)(18,26,27,31,24,32,28,25)(1,3,4,8)(2,6,5,7)(18,24)(19,30)(20,29)(27,28)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.