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)(11,15)(12,13)(14,16)(17,18,22,23)(19,24,25,20)(21,26,29,30)(27,31,32,28)(1,3,5,8)(2,6,4,7)(17,19)(18,20)(21,27)(22,25)(23,24)(26,28)(29,32)(30,31)(10,13)(14,15)(18,23)(19,25)(21,29)(28,31) involution — undirected(9,10)(11,14)(12,13)(15,16)(17,19)(18,24)(20,23)(21,27)(22,25)(26,31)(28,30)(29,32) involution — undirected(9,11)(10,14)(12,16)(13,15)(17,20,22,24)(18,25,23,19)(21,28,29,31)(26,32,30,27)(1,4,5,2)(3,7,8,6)(17,21,22,29)(18,26,23,30)(19,27,25,32)(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.