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