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