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