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