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