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