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