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