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