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