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