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