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