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