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