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