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)(19,26)(20,30)(21,27)(22,25)(23,24)(28,29)(31,32) involution — undirected(9,10)(11,14)(12,13)(15,16)(17,19)(18,21)(20,28)(22,29)(23,27)(24,26)(25,31)(30,32) involution — undirected(2,6)(3,7)(9,11,12,15)(10,14,13,16)(18,24)(19,27)(20,25)(29,32)(1,3,5,7)(2,4,6,8)(17,20,23,25)(18,22,24,30)(19,28,27,31)(21,29,26,32)(1,4)(2,7)(3,6)(5,8)(17,21)(18,19)(20,29)(22,28)(23,26)(24,27)(25,32)(30,31) involution — undirected(17,22)(18,25)(19,29)(20,24)(21,31)(23,30)(26,28)(27,32) 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.