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