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