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