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