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