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