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