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