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