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