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