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