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