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