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