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