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