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)(17,18,22,25)(19,27,30,31)(20,26,21,24)(23,28,32,29)(2,6)(4,12)(7,13)(8,9)(11,16)(14,15)(17,19)(18,23)(20,28)(21,29)(22,30)(24,31)(25,32)(26,27) involution — undirected(1,3)(2,7)(4,11)(5,10)(6,13)(8,15)(9,14)(12,16)(18,24)(20,21)(23,31)(25,26)(27,32)(28,29) involution — undirected(18,25)(23,32)(24,26)(27,31) involution — undirected(3,10)(7,14)(11,16)(13,15)(17,20,22,21)(18,26,25,24)(19,28,30,29)(23,27,32,31)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.