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