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