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