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