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