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