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