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