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