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