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