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