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