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