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