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)(19,24)(20,29)(21,31)(22,32)(23,27)(25,28)(26,30)(2,6)(7,8)(9,11)(10,13)(12,16)(14,15)(17,19,23,28)(18,24,27,25)(20,30,21,22)(26,31,32,29)(1,3,5,4)(2,7,6,8)(10,14)(11,16)(17,20,22,19,23,21,30,28)(18,24,26,29,27,25,32,31)(1,4,5,3)(2,8,6,7)(10,14)(13,15)(17,21,22,28,23,20,30,19)(18,25,26,31,27,24,32,29)(2,6)(7,8)(10,14)(13,15) 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.