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)(11,16)(12,14)(13,15)(17,18)(19,20)(21,24)(22,28)(23,25)(26,27)(29,31)(30,32)(1,3,4,8)(2,5,6,7)(11,12)(14,16)(17,19,23,22)(18,20,25,28)(21,29,30,26)(24,31,32,27)(9,11,13,12)(10,14,15,16)(17,20,19,18,23,28,22,25)(21,27,26,24,30,31,29,32)(9,12,13,11)(10,14,15,16)(17,21,23,30)(18,24,25,32)(19,26,22,29)(20,27,28,31)(21,30)(24,32)(26,29)(27,31) 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.