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