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