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