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