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