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