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