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