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