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