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)(17,18,23,20)(19,26,29,32)(21,25,22,30)(24,31,27,28)(1,3,6,12)(2,7,9,16)(4,11,5,14)(8,15,13,10)(17,19,23,29)(18,24,20,27)(21,28,22,31)(25,32,30,26)(1,2)(3,7)(4,13)(5,8)(6,9)(10,11)(12,16)(14,15)(17,18)(19,24)(20,23)(21,25)(22,30)(26,31)(27,29)(28,32) involution — undirected(1,4,6,5)(2,8,9,13)(3,11,12,14)(7,15,16,10)(17,20,23,18)(19,27,29,24)(21,25,22,30)(26,28,32,31)(17,21,23,22)(18,25,20,30)(19,28,29,31)(24,32,27,26)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.