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