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