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