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