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