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