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