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