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