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