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