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