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