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