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