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