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