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)(17,18,20,25,21,23,28,22)(19,26,27,30,29,24,31,32)(10,13)(11,15)(18,22)(19,27)(20,28)(23,25)(29,31)(30,32) involution — undirected(1,3,5,4)(2,6,7,8)(9,10)(11,14)(12,13)(15,16)(18,23)(22,25)(24,26)(30,32)(10,13)(14,16)(17,19,28,31,21,29,20,27)(18,24,22,30,23,26,25,32)(1,4,5,3)(2,6,7,8)(9,11,12,15)(10,14,13,16)(18,23)(22,25)(24,26)(30,32)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.