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