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