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