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