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