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