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