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