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