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