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