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