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