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