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