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