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