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