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