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