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