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