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