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