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