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