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