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