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