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