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