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