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