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