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