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