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