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