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