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