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