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