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