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