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