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