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