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