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