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