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