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