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