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