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