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