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