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