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