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