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