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