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