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