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