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