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