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