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