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