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