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