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