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