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