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