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