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