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