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