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