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