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