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