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