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