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