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