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