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