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