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