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)(17,18,23,27,22,26,32,21)(19,25,29,30,20,24,31,28)(1,3,4,7)(2,5,6,8)(9,10,13,14)(11,15,12,16)(17,19,22,20)(18,24,26,25)(21,30,27,28)(23,29,32,31)(2,6)(5,8)(9,11,13,12)(10,15,14,16)(17,20,22,19)(18,25,26,24)(21,28,27,30)(23,31,32,29)(10,14)(15,16)(19,20)(24,25)(28,30)(29,31) involution — undirected(9,12,13,11)(10,16,14,15)(17,21,32,26,22,27,23,18)(19,28,31,24,20,30,29,25)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.