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