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