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