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