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