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)(17,18,22,23)(19,27,28,24)(20,25,29,32)(21,30,31,26)(34,38)(36,44)(39,41)(42,48)(4,11)(7,9)(12,16)(14,15)(18,23)(20,29)(24,27)(26,30)(33,34)(35,41)(36,40)(37,38)(39,43)(42,47)(44,45)(46,48) involution — undirected(2,3)(7,9)(8,10)(14,15)(18,23)(19,28)(25,32)(26,30)(33,34,37,38)(35,39,43,41)(36,40,44,45)(42,46,48,47)(1,3,6,2)(4,9,11,7)(5,10,13,8)(12,15,16,14)(17,19)(18,24)(20,30)(21,25)(22,28)(23,27)(26,29)(31,32)(33,34)(35,39)(36,40)(37,38)(41,43)(42,46)(44,45)(47,48)(1,4,6,11)(2,7,3,9)(5,12,13,16)(8,14,10,15)(17,20)(18,25)(19,26)(21,27)(22,29)(23,32)(24,31)(28,30)(33,35)(34,39)(36,42)(37,43)(38,41)(40,46)(44,48)(45,47)(1,5,6,13)(2,8,3,10)(4,12,11,16)(7,14,9,15)(17,21,22,31)(18,26,23,30)(19,25,28,32)(20,24,29,27)(33,36)(34,40)(35,42)(37,44)(38,45)(39,46)(41,47)(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.