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