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