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