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