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