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