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