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