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