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