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