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