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