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