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