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