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)(19,27)(20,25)(21,26)(22,24)(23,29)(28,32)(30,31)(1,3,4,8)(2,5,6,7)(10,13)(14,16)(9,10)(11,14)(12,13)(15,16)(17,19)(18,23)(20,30)(21,28)(22,29)(24,27)(25,32)(26,31) involution — undirected(18,24)(23,27)(25,26)(31,32) involution — undirected(10,13)(14,16)(17,20,22,21)(18,25,24,26)(19,28,29,30)(23,31,27,32)(9,11,12,15)(10,14,13,16)(17,21,22,20)(18,26,24,25)(19,28,29,30)(23,31,27,32)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.