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