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