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