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