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