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