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)(17,18,21,24,22,26,20,25)(19,27,30,23,28,32,29,31)(1,3)(2,7,10,15)(4,12)(5,13)(6,11)(8,14,16,9)(17,19)(18,23)(20,30)(21,29)(22,28)(24,27)(25,32)(26,31)(1,3)(2,8)(4,12)(5,13)(6,11)(7,14)(9,15)(10,16)(18,24)(20,21)(23,27)(25,26)(29,30)(31,32) involution — undirected(3,11)(7,15)(8,16)(12,13)(19,28)(23,31)(27,32)(29,30) 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.