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