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)(18,22)(20,23)(26,29)(30,32)(1,2)(3,6)(4,8)(5,7)(9,11,13,16)(10,14,15,12)(17,18,21,22)(19,23,24,20)(27,31)(30,32)(1,3,5,4)(2,6,7,8)(9,12,13,14)(10,11,15,16)(17,19,21,24)(18,20,22,23)(25,26,28,29)(27,30,31,32)(1,4,5,3)(2,6,7,8)(9,10)(11,12)(13,15)(14,16)(25,27)(26,30)(28,31)(29,32)(1,2)(3,8)(4,6)(5,7)(9,12)(10,11)(13,14)(15,16)(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.