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