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