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