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