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)(19,26)(20,23)(21,24)(22,25)(27,32)(28,30)(29,31)(33,34,39,42)(35,43,46,40)(36,47,48,37)(38,41,45,44)(2,4)(7,9)(8,12)(15,16)(19,20)(21,29)(23,26)(24,31)(33,35)(34,40)(36,44)(37,38)(39,46)(41,48)(42,43)(45,47) involution — undirected(17,19,22,20)(18,23,25,26)(21,27,29,28)(24,30,31,32)(33,36)(34,37)(35,44)(38,40)(39,48)(41,46)(42,47)(43,45)(1,3,6,11)(2,7,4,9)(5,13,14,10)(8,16,12,15)(17,20,22,19)(18,23,25,26)(21,28,29,27)(24,30,31,32)(33,36)(34,37)(35,41)(38,43)(39,48)(40,45)(42,47)(44,46)(1,4,6,2)(3,9,11,7)(5,12,14,8)(10,16,13,15)(17,21)(18,24)(19,27)(20,28)(22,29)(23,30)(25,31)(26,32)(33,37)(34,36)(35,45)(38,46)(39,47)(40,41)(42,48)(43,44)(1,5,6,14)(2,8,4,12)(3,10,11,13)(7,15,9,16)(17,18)(19,23)(20,26)(21,24)(22,25)(27,30)(28,32)(29,31)(33,38,39,45)(34,41,42,44)(35,37,46,47)(36,40,48,43)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.