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