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