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