One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,6)(17,18,22,26)(19,27,31,43)(20,32,34,24)(21,36,28,25)(23,37,39,30)(29,45,33,42)(35,41,44,47)(38,46,40,48)(9,10)(11,14)(12,13)(15,16)(17,19,28,37,22,31,21,30)(18,23,36,43,26,39,25,27)(20,33,44,46,34,29,35,48)(24,40,47,42,32,38,41,45)(2,6)(7,8)(10,13)(14,16)(17,20)(18,24)(19,29)(21,35)(22,34)(23,38)(25,41)(26,32)(27,42)(28,44)(30,46)(31,33)(36,47)(37,48)(39,40)(43,45) involution — undirected(1,3,5,4)(2,7,6,8)(9,11)(10,14)(12,15)(13,16)(20,34)(24,32)(29,33)(35,44)(38,40)(41,47)(42,45)(46,48)(1,4,5,3)(2,8,6,7)(11,15)(14,16)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.