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