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