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